title: Chronic segmental spinal muscular atrophy of upper extremities in identical twins.
abstract: We present the 1st report of chronic segmental spinal muscular atrophy confined to the upper extremities in identical male twins. This occurrence in identical twins, together with reports of siblings and parent-child pairs of a disorder phenotypically similar to the more common sporadic form in the literature, suggests a genetic etiology in some cases.
authors.affiliation: Department of Neurology, University of Vermont College of Medicine, Burlington, VT.
authors.forename: R
authors.initials: R
authors.lastname: Tandan
authors.forename: K R
authors.initials: KR
authors.lastname: Sharma
authors.forename: W G
authors.initials: WG
authors.lastname: Bradley
authors.forename: H
authors.initials: H
authors.lastname: Bevan
authors.forename: P
authors.initials: P
authors.lastname: Jacobsen
mesh_terms: D000368:Aged; D001132:Arm; D002908:Chronic Disease; D004200:Diseases in Twins / Q000235:genetics*; D004576:Electromyography; D006801:Humans; D008297:Male; D009132:Muscles / Q000503:physiopathology; D009134:Muscular Atrophy, Spinal / Q000235:genetics* / Q000503:physiopathology; D009431:Neural Conduction